need injector help
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Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
Wrong forum.... this topic is routinely covered on the "Fuel and Ignition" forum.
Injector size it determined by flywheel HP. A simple guideline - for minimum injector size on a normally aspirated application, multiply your estimated max flywheel HP by 0.07
Example:
500 flywheel HP x 0.07 = 35 #/HR
That assumes a BSFC of 0.476 and a max injector DC of 85%. A better, more efficient tune will reduce the BSFC, requiring less injector. A lower duty cycle is always a good, idea, and that would require a larger injector.
Injector size it determined by flywheel HP. A simple guideline - for minimum injector size on a normally aspirated application, multiply your estimated max flywheel HP by 0.07
Example:
500 flywheel HP x 0.07 = 35 #/HR
That assumes a BSFC of 0.476 and a max injector DC of 85%. A better, more efficient tune will reduce the BSFC, requiring less injector. A lower duty cycle is always a good, idea, and that would require a larger injector.
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